Regional anaesthesia: practice question

A Anaesthesia question in the style of the NEET PG paper. Answer it first, then read why the right option is right and why each of the others is wrong.

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Anaesthesia · Regional anaesthesia

Sample item

What is the main site of action of spinal anaesthesia?

Original practice item, not a recalled exam question. Nothing here is recorded.

The answer and the reasoning

B. Subarachnoid cerebrospinal fluid

Spinal anaesthetic is injected into subarachnoid CSF, producing rapid sensory, motor, and sympathetic block below the affected spinal levels.

Option by option

  • A. Neuromuscular junction

    Neuromuscular junction is peripheral.

  • B. Subarachnoid cerebrospinal fluid (correct)

    Correct: intrathecal CSF injection defines spinal anaesthesia.

  • C. Epidural space only

    Epidural is a separate neuraxial technique.

  • D. Cerebral ventricle

    Ventricular injection is not anaesthetic technique.

Source note: Original NextPrep sample item — pending expert review. This item is original practice material awaiting independent expert review, so confirm important facts in a standard textbook.

More Anaesthesia questions

Questions about this Anaesthesia question

What is the answer to this Anaesthesia question?

The best answer is B, Subarachnoid cerebrospinal fluid. Spinal anaesthetic is injected into subarachnoid CSF, producing rapid sensory, motor, and sympathetic block below the affected spinal levels.

Why is "Neuromuscular junction" not the answer?

Neuromuscular junction is peripheral.

Why is "Epidural space only" not the answer?

Epidural is a separate neuraxial technique.

Why is "Cerebral ventricle" not the answer?

Ventricular injection is not anaesthetic technique.

What concept does this question test?

It tests Regional anaesthesia in Anaesthesia. The correct option holds because: Correct: intrathecal CSF injection defines spinal anaesthesia.

How hard is this question?

We tag it as an application question: it asks you to use a fact on a patient or a finding. The tag is our own editorial judgement, not an official difficulty rating, so read the reason for every option, not only the answer.

How should I study Regional anaesthesia?

Make a table of each agent, its key advantage and its main side effect. Then use the flashcards and the other Anaesthesia questions on this site to test what stuck.

Is this a real NEET PG question?

No. It is an original practice item (editorial status: sample, version 1). NextPrep does not publish recalled or leaked questions, and independent faculty review of this item has not been completed yet, so confirm important facts in a standard textbook.